"outfront" next, american meets with syria's neighbors and the united states has a plan on chemical weapons and really, are they going to use those chemical weapons? new details tonight and we followed amy copeland's recovery >>> breaking news out of the pentagon. sources tell cnn the u.s. is huddling with allies on what a chemical attack by assad would actually look like. we have a picture from former cia operative and contributor bob bayer to show you what the impact of a single shell of gas would be in launched on homs in syria. the large swath of the city that would be affected. it's estimated about 18,000 people would be killed in a day. let's get straight to barbara starr. and barbara, what have you learned tonight? >> well, you know, as tragic and serious as this is for the people of syria, this now has regional implications throughout the middle east. intelligence services from israel, turkey, jordan, lebanon, all the countries surrounding syria are talking with the united states around the clock about this very scenario because if there were to be god forbid a chemical attack, the